ArticleEcancermedicalscience2021
Better overall survival in patients who achieve pathological complete response after neoadjuvant chemotherapy for breast cancer in a Chilean public hospital.
Article in Ecancermedicalscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 7 citations in OpenAlex.
- Analysis of surgical margins in breast cancer patients undergoing mastectomy in Tanzania.BMC surgery · 2025Article
- Effect of chemotherapy timing in triple-negative breast cancer: a real-world evidence study.Breast cancer research and treatment · 2025Article
- Intercontinental Comparison of Immunohistochemical Subtypes Among Individuals With Breast Cancer in South-East Asia and South America: A Scoping Systematic Review and Meta-Analysis of Observational Studies.World journal of oncology · 2024Article
- Current Approaches to Neoadjuvant Immunotherapy in Resectable Non-small Cell Lung Cancer.Current oncology reports · 2023Review
- Obesity is associated with early recurrence on breast cancer patients that achieved pathological complete response to neoadjuvant chemotherapy.Scientific reports · 2022Article
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Authors and funding
17 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionThere is extensive evidence associating the response to neoadjuvant chemotherapy (NeoCT) with breast cancer (BC) survival. However, to the author's knowledge, there is no published data in Chile. The objective of the study is to evaluate whether achieving pathological complete response (pCR) after NeoCT is associated with greater survival and lower risk of recurrence in a Chilean Public Health Service.
methodsRetrospective analysis of a database. Patients with a diagnosis of Stages I-III BC who received NeoCT between 2009 and 2019 were included. Clinical and pathological information were extracted from the clinical records. BC subtypes were defined using hormone receptor (HR) information (HR: oestrogen and/or progesterone) and epidermal growth factor type 2 (HER2), being divided into four groups: HR+/HER2-, HR+/HER2+, HR-/HER2+, HR-/HER2-. pCR was defined as the absence of invasive cancer in the breast and axilla (ypT0/is N0) after NeoCT.
resultsOf 3,092 patients, 17.2% received NeoCT. Of these, 40.2% corresponded to HR+/HER2-, 20.9% HR+/HER2+, 18.2% HR-/HER2+ and 20.7% HR-/HER2-. Overall, 24.8% achieved pCR, being the lowest for HR+/HER2- (10.3%) and the highest for HR-/HER2+ (53.2%). In the multivariable analysis, family history, HER2+ and type of chemotherapy were associated with a greater probability of pCR. With a median follow-up of 40 months, the overall survival and metastasis-free survival (MFS) at 3 years were greater for the group with pCR compared to that which did not achieve it (90.5% versus 76.7%,
conclusionNeoCT is associated with greater pCR in aggressive BC subtypes. In those, achieving pCR was associated with better survival in our study. To the author's knowledge, this is the first study which evaluates the relation between pCR and BC subtypes in a Chilean public hospital.
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